Home / 7,908.19-10,915.58-5,221.37

Finding the Fourth Proportional to 7,908.19, 10,915.58 and 5,221.37

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Solution

The fourth proportional to 7,908.19, 10,915.58 and 5,221.37 is: 7,206.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,908.19 : 10,915.58 = 5,221.37 : x
  2. Step 2: Convert to fraction form
    7,908.19/10,915.58 = 5,221.37/x
  3. Step 3: Cross multiply
    7,908.19x = 10,915.58 × 5,221.37
  4. Step 4: Simplify right side
    7,908.19x = 56,994,281.94
  5. Step 5: Solve for x
    x = 56,994,281.94/7,908.19
  6. Step 6: Final answer
    x = 7,206.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.